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