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