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