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