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