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