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