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)(11,13,15,16)(17,18,22,26)(19,23,30,37)(20,25,32,42)(21,24,34,27)(28,36,31,40)(29,35,44,38)(33,39,46,41)(43,47,45,48)(1,2)(3,6)(4,8)(5,7)(9,11)(10,13)(12,15)(14,16)(17,19,22,30)(18,23,26,37)(20,31,32,28)(21,29,34,44)(24,35,27,38)(25,40,42,36)(33,45,46,43)(39,48,41,47)(11,15)(13,16)(18,24)(21,34)(23,35)(25,39)(26,27)(29,44)(33,46)(36,47)(37,38)(40,48)(41,42)(43,45) involution — undirected(1,3,5,4)(2,6,7,8)(17,20)(18,25)(19,28)(21,33)(22,32)(23,36)(24,39)(26,42)(27,41)(29,43)(30,31)(34,46)(35,47)(37,40)(38,48)(44,45)(1,4,5,3)(2,6,7,8)(11,15)(13,16)(18,26)(20,32)(23,37)(24,27)(28,31)(33,46)(35,38)(43,45)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.