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