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