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