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