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