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