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