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