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