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