One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,8)(4,9)(5,10)(6,7)(11,15)(12,13)(14,16)(17,18)(19,22)(20,29)(21,25)(23,26)(24,28)(27,32)(30,31)(34,36)(35,40)(38,46)(45,48) involution — undirected(2,7)(4,13)(8,15)(10,14)(17,19)(18,22)(20,21)(23,27)(24,30)(25,29)(26,32)(28,31)(33,34,39,36)(35,42,40,37)(38,41,46,44)(43,48,47,45)(3,11)(5,16)(8,15)(10,14)(19,27)(20,28)(22,32)(24,29)(33,35)(34,37)(36,42)(38,43)(39,40)(41,45)(44,48)(46,47) involution — undirected(1,3)(2,8)(4,14)(5,12)(6,11)(7,15)(9,16)(10,13)(17,20)(18,24)(19,21)(22,30)(23,28)(25,32)(26,29)(27,31)(33,36,39,34)(35,42,40,37)(38,44,46,41)(43,48,47,45)(1,4,6,13)(2,9,7,12)(3,10,11,14)(5,15,16,8)(17,21)(18,25)(19,28)(20,27)(22,24)(23,31)(26,30)(29,32)(33,37,39,42)(34,40,36,35)(38,45,46,48)(41,47,44,43)(1,5)(2,10)(3,12)(4,15)(6,16)(7,14)(8,13)(9,11)(17,22)(18,19)(20,30)(21,24)(23,32)(25,28)(26,27)(29,31)(33,38)(34,41)(35,43)(36,44)(37,45)(39,46)(40,47)(42,48) 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.