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