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