One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,7)(5,9)(6,11)(10,15)(12,14)(13,16)(17,18,23,21)(19,26,24,20)(22,25,30,29)(27,32,31,28)(33,34)(35,38)(36,43)(37,45)(39,41)(40,48)(42,44)(46,47)(4,12)(7,14)(10,16)(13,15)(17,19)(18,20)(21,26)(22,27)(23,24)(25,28)(29,32)(30,31)(33,35)(34,36)(37,46)(38,41)(39,43)(40,47)(42,48)(44,45) involution — undirected(1,3)(2,6)(4,10)(5,11)(7,13)(8,9)(12,16)(14,15)(17,18,23,21)(19,20,24,26)(22,25,30,29)(27,28,31,32)(33,36,39,38)(34,35,41,43)(37,44,48,47)(40,42,45,46)(1,4,5,12)(2,7,9,14)(3,10,11,16)(6,13,8,15)(17,20,23,26)(18,24,21,19)(22,28,30,32)(25,31,29,27)(33,37)(34,40)(35,42)(36,44)(38,47)(39,48)(41,45)(43,46)(1,3)(2,8)(4,10)(5,11)(6,9)(7,15)(12,16)(13,14)(17,21,23,18)(19,26,24,20)(22,25,30,29)(27,28,31,32)(33,38,39,36)(34,35,41,43)(37,47,48,44)(40,42,45,46)(1,2)(3,6)(4,7)(5,9)(8,11)(10,13)(12,14)(15,16)(17,22)(18,25)(19,27)(20,28)(21,29)(23,30)(24,31)(26,32)(33,35)(34,38)(36,41)(37,42)(39,43)(40,47)(44,45)(46,48) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.