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