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