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