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