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