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