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)(17,18,22,26)(19,27,28,42)(20,32,35,39)(21,36,33,25)(23,37,38,30)(24,29,41,34)(31,48,45,44)(40,47,43,46)(1,3)(2,6)(4,11)(5,10)(7,14)(8,9)(12,15)(13,16)(19,28)(23,38)(27,42)(30,37)(31,45)(40,43)(44,48)(46,47) involution — undirected(17,19,29,46,21,31,20,30,22,28,34,47,33,45,35,37)(18,23,39,48,25,40,24,27,26,38,32,44,36,43,41,42)(3,10)(6,9)(11,16)(14,15) involution — undirected(1,4,5,13)(2,7,8,12)(3,11,10,16)(6,14,9,15)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.