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