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