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