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