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