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