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