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