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