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