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