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