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